Low Temperature Physics: 37, 913 (2011); https://doi.org/10.1063/1.3672158 (6 pages)
Fizika Nizkikh Temperatur: Volume 37, Number 11 (November 2011), p. 1148-1155 ( to contents , go back )
Electronic states at a solid rough surface
S.I. Khankina, V.M. Yakovenko
A. Usikov Institute of Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12 Acad. Proskura Str., Kharkiv 61085, Ukraine
Научно-исследовательский и проектно-конструкторский институт "Молния" Министерства образования и науки Украины, ул. Шевченко, 47, г. Харьков, 61013, Украина
Received March 11, 2011
Surface electronic states at a solid periodically rough boundary have been obtained and studied. It is shown that these are twq spectral regions of surface states separated by a forbidden band. The properties of the surface states in these regions are quite dissimilar. It is found that the action of surface electronic states gives rise to a subsurface ingomogeneous plasma layer, responsible for the peculiar features of polariton distribution and spatial dispersion of electrostatic vibration frequency. The related dispersion relations are derived. Some peculiarities of electronic state creation are considered for the case where the periodic surface rougness is caused by the Rayleigh sound propagation.
PACS: 73.20.–r Electron states at surfaces and interfaces;
Key words: periodically rough, Rayleigh sound, electronic state, ingomogeneous plasma, polaritons.